Thought some of you might find this as as I do. The potential is pretty wild.
This technology is a fundamental breakthrough in manufacturing. This is a big deal. These are called "Polymagnets" or "Programmable Magnets" or "Printable Magnets" or "Printed Magnets".
People asking for the spring latch can get them here: http://catalog.polymagnet.com/spring-latch-demo.html
Here's the Polymagnet homepage: http://www.polymagnet.com/